Cold start clicking and clacking noise

[csiguru777]

When I start my 2009 Jeep Liberty in the morning it has a ticking or sometimes clacking noise that goes away after about 5 to 10 minutes and then it does not happen the rest of the day. Any ideas on what might be causing this? The Jeep has the 3.7 liter engine.

 

[badkittystt]

I am by far not the most knowledgeable forum member, but I'd check your oil. Definitely don't want to let that run down and I know low oil pressure can cause a noise at startup.

 

[teckn9ne]

Mine clicks on startup to just what 3.7 does.

 

[badkittystt]

Mine used to, then I put synthetic oil in it. May be unrelated?

 

[ephantmon]

I've always used synthetic in mine, and it still happens. Usually only when it's cold (less than 50 F), and it goes away as the engine warms up. The click/clack/clatter increases directly related to pressing on the accelerator. No noticeable relationship to oil level or length of time since last oil change.

 

[Elmer]

10 bucks says it's just your AC Compressor pulley that's clicking. 100% normal and necessary.